CN103581806A - Electroacoustic transducer - Google Patents

Electroacoustic transducer Download PDF

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Publication number
CN103581806A
CN103581806A CN201310338489.9A CN201310338489A CN103581806A CN 103581806 A CN103581806 A CN 103581806A CN 201310338489 A CN201310338489 A CN 201310338489A CN 103581806 A CN103581806 A CN 103581806A
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CN
China
Prior art keywords
shell portion
signal
touch
housing
electroacoustic transducer
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Granted
Application number
CN201310338489.9A
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Chinese (zh)
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CN103581806B (en
Inventor
张继亮
王晓飞
王孟夏
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Jabil Circuit Beijing Ltd
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Jabil Circuit Beijing Ltd
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Publication of CN103581806A publication Critical patent/CN103581806A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/016—Input arrangements with force or tactile feedback as computer generated output to the user
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/025—Magnetic circuit
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2400/00—Loudspeakers
    • H04R2400/03—Transducers capable of generating both sound as well as tactile vibration, e.g. as used in cellular phones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/11—Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Human Computer Interaction (AREA)
  • General Physics & Mathematics (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)

Abstract

The invention provides an electroacoustic transducer, including a hollow housing, a magnet unit, an elastic diaphragm, a vibration unit, and a coil. The housing has a first housing and a second housing to form a storing space. The magnet unit is secured in the first housing. The elastic diaphragm is a thin layer and disposed between the second housing and the vibration unit. The spiral coil is mounted on the vibration unit and has two electrical connecting points for inputting electric signal of alternating current. Hence, the coil can generate continuous vibration caused by alternating attraction/repelling force of the magnet unit. When the frequency of the electric signal is within 20-20000 Hz, the elastic diaphragm generates sound signals within earshot. When it is within 10-20 Hz, the transducer can generate vibration signals. So, signal unit can produce sound and vibration. Therefore, the transducer has advantages of generating sound and vibration through a single component, saving space, and that a finished product is ultrathin.

Description

Electroacoustic transducer
Technical field
The present invention is about a kind of electroacoustic transducer, and espespecially a kind of having concurrently can be produced sound and vibration and be saved space and reach the electroacoustic transducer of ultra-thin functions such as finished product by single component.
Background technology
Enumerate following several traditional devices with electroacoustic transduction function:
(1) miniature electro-acoustic transducer, as shown in Figure 6, it comprises:
The public bar 71 of one magnetic;
Two external magnets 72, are generally the vertical both sides of being located at the public bar 71 of this magnetic;
A pair of magnetic pole loop 73, connects this two external magnets 72;
One cap 74, is located on this magnetic pole loop 73, and it has outlet sound mouth 741;
One internal magnets 75, is located in the public bar 71 of this magnetic;
One polymer film 76, between this cap 74 and this internal magnets 75.
This polymer film 76 of this device still needs and interior maintenance one interval D of this cap 74, can produce vibration, and fails to break through 74 one-tenth combined structures of polymer film 76 and this cap, still because this interval D produces certain thickness, cannot be applied to superthin structure.
(2) electronic installation and electroacoustic transducer thereof, as shown in Figure 7, it comprises:
Two electret diaphragms 81;
One framework 82, the wherein side between these two electret diaphragms 81;
At least one perforated panel 83, the opposite side wherein between these two electret diaphragms 81;
A plurality of interval parts 84, respectively between this perforated panel 83 and this two electret diaphragms 81.
Same, between this perforated panel 83 of this device and this two electret diaphragms 81, all needing to keep this interval parts 84, its thickness is subject to the restriction of interval parts 84, cannot be applied to superthin structure.
(3) electroacoustic transducer, as shown in Figure 8, it comprises:
One housing 91;
One acoustical generator 92, is located in this housing 91;
One piezoelectric vibrator 93, is located in this housing 91;
One upper cover 94, covers on this housing 91.
Acoustical generator 92 and the piezoelectric vibrator 93 of this device are two absolute construction, thereby produce the problem that consumption accounts for device space; And this acoustical generator 92 cannot be broken through and these housing 91 combined structures, be also that consumption takes up space, be still and cannot be applied to superthin structure.
In view of this, must develop and can solve above-mentioned existing imperfect technology.
Summary of the invention
The object of the present invention is to provide a kind of electroacoustic transducer, it has concurrently and can be produced sound and vibration and saving space and be reached the ultra-thin advantages such as finished product by single component.Particularly, the problem that institute of the present invention wish solves is that traditional acoustical generator and vibrating diaphragm (being also vibrating motor) cannot unify, and acoustical generator and housing cannot unify and need keep at a distance, and all causes to consume take up space and cannot be applied to the problems such as superthin structure.
The technological means addressing the above problem provides a kind of electroacoustic transducer, and it comprises:
One hollow housing, has one first shell portion and one second shell portion; This first shell portion and this second shell portion are connected and form a hollow structure, and it has a spatial accommodation, and this first shell portion has one first inner surface and the first outer surface; This second shell portion has an opening;
One magnet, is fixed on this first inner surface of this first shell portion;
One elasticity membranous part, is generally laminar, and has an outer rim and an inner edge; This outer rim is fixed on this opening of this second shell portion;
One vibrating diaphragm, is fixed on this inner edge of this elasticity membranous part;
One coil circuit, generally in the shape of a spiral, and is located on this vibrating diaphragm, and has two electric connection points, in order to connect input one electric signal.
Above-mentioned purpose of the present invention and advantage, be not difficult, from the detailed description and accompanying drawing of following selected embodiment, to gain in-depth understanding.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of decomposition of the present invention;
Fig. 2 is the combination of Fig. 1 and the schematic diagram of broken section;
Fig. 3 is the schematic diagram before action of the present invention;
Fig. 4 is that the present invention is after action, to be schematic diagram;
Fig. 5 is schematic diagram of the present invention;
Fig. 6 is that traditional the first device is schematic diagram;
Fig. 7 is that traditional the second device is schematic diagram;
Fig. 8 is that the third device of tradition is schematic diagram.
In figure:
10 hollow housings; 11 first shell portions;
111 first inner surfaces; 112 first outer surfaces;
11A touch-control display part; 11A1 touch control layer;
11A2 display layer; 11B framework;
11B1 plate-like body; 11B2 flange;
The outer side convex rib of 11B3; Side convex rib in 11B4;
12 second shell portions; 12A housing;
12B inside casing; 12C flange;
121 openings; 13 spatial accommodations;
20 magnet; 30 elasticity membranous parts;
31 outer rims; 32 inner edges;
40 vibrating diaphragms; 50 coil circuits;
51 electric connection points; 61 electrical signal lines;
62 signal of telecommunication generating units; 63 touching signals lines;
The public bar of 71 magnetic; 72 external magnets;
73 magnetic pole loops; 74 caps;
741 outlet sound mouths; 75 internal magnets;
76 polymer films; 81 electret diaphragms;
82 frameworks; 83 perforated panels;
84 interval parts; 91 housings;
92 acoustical generators; 93 piezoelectric vibrators;
94 upper covers; P1 primary importance;
The P2 second place; P3 the 3rd position;
D interval.
Embodiment
Below in conjunction with the drawings and specific embodiments, the invention will be further described, can be implemented, but illustrated embodiment is not as a limitation of the invention so that those skilled in the art can better understand the present invention also.
Refer to Fig. 1, Fig. 2, Fig. 3 and Fig. 5, the present invention is a kind of electroacoustic transducer, and it comprises:
The hollow housing 10 that is without exception square box body, its by one first shell portion 11 and one second shell portion 12 up and down group connect and form, and this first shell portion 11 and this second shell portion 12 be connected and form a hollow structure, it has a spatial accommodation 13.
About this first shell portion 11, comprise that a touch-control display part 11A (making the present invention form intelligent touch-control/communication device) and is for the accommodating fixing framework 11B of touch-control display part 11A.This touch-control display part 11A is generally square, and mainly comprises a touch control layer 11A1 and a display layer 11A2.This touch control layer 11A1 is for carrying out touch control operation; This display layer 11A2 is in order to show the dependent picture information of this touch-control display part of input 11A, and receives (user) and press this touch control layer 11A and the touch-control signal that produces.This framework 11B is also generally square, mainly comprise a plate-like body 11B1, a flange 11B2 who upwards protrudes out from this plate-like body 11B1 surrounding, an outer side convex rib 11B3 who protrudes out from this plate-like body 11B1 surrounding downwards, and an interior side convex rib 11B4 who protrudes out downwards from this plate-like body 11B1 inner side.Wherein, this plate-like body 11B1 has the first inner surface 111 that is positioned at bottom surface and one first outer surface 112 that is positioned at end face, and jointly defines one for the accommodating fixing accommodation space of this touch-control display part 11A by this first outer surface 112 with this flange 11B2.
This second shell portion 12 mainly comprises housing 12A, an inside casing 12B who inwardly protrudes out from this housing 12B upside who is without exception square, and a flange 12C who protrudes out from the inside level of this housing 12B downside.The common slot of pegging graft for this outer side convex rib 11B3 of this framework 11B that forms of this housing 12A and this inside casing 12B, for this first shell portion 11 and this second shell portion 12 up and down group connect.This second shell portion 12 also has an opening 121, and it is positioned on this flange 12C.
One magnet 20, is fixed on this first inner surface 111 of this first shell portion 11;
One elasticity membranous part 30, is generally thin slice (can be annular flake) shape, and has an outer rim 31 and an inner edge 32; This outer rim 31 is fixed on this opening 121 of this second shell portion 12;
One vibrating diaphragm 40, is fixed on this inner edge 32 of this elasticity membranous part 30;
One coil circuit 50, generally in the shape of a spiral, and is located on this vibrating diaphragm 40, and has two electric connection points 51, in order to connect input one electric signal.
Whereby, when this electric signal is when exchanging input, the magnetic field that this coil circuit 50 is subject to this magnet 20 is inhaled and is scolded and produce reciprocal vibration; And when the frequency of this electric signal is during between 20 ~ 20000Hz, the vibration frequency of this vibrating diaphragm 40 forms audio signal between people's ear earshot; When the frequency of this electric signal is during between 10 ~ 20Hz, the vibration of this vibrating diaphragm 40 forms vibration signal.
In more detail, as shown in Figure 3, when electric signal is not inputted, this vibrating diaphragm 40 does not vibrate, and is positioned at a P1 of primary importance place.When this electric signal is inputted for exchanging, this coil circuit 50 produces toward the magnetic field of complex transformation and produces reciprocal suction/scold action with this magnet 20, because this elasticity membranous part 30 has elasticity, make constantly double vibrations between a second place P2 and one the 3rd position P3 of this vibrating diaphragm 40, as shown in Figure 4.
This interior side convex rib 11B4 that this plate-like body 11B1 surrounding protrudes out downwards can be circular magnet groove.
This magnet 20 is cylindric, is fixed in this magnet groove, and between this plate-like body 11B1 and this vibrating diaphragm 40.In addition, this magnet 20 preferably with these vibrating diaphragm 40 maintenance preset distances so that this vibrating diaphragm 40 has a double vibrations space.
Certainly, this magnet 20 also can be by other means (such as sticking together, welding, engaging etc.) is fixed on this first inner surface 111.
This first shell portion 11 and this second shell portion 12 about this hollow housing 10, all can be Merlon (polycarbonate, be called for short PC) or acrylonitrile-butadiene-styrene copolymer (Acrylonitrile-Butadiene-Styrene is called for short ABS resin) made.
This second shell portion 12 is generally shallow discoid.And this first shell portion 11 is generally lamellar, can with this second shell portion 12 in conjunction with and form this spatial accommodation 13 of closed.
Relevant this elasticity membranous part 30, is generally circle lamellar body kenel, and its section is curved arc shape, certainly also can be revised as wavy, linearity or other shapes.This elasticity membranous part 30 is for connecting described this second shell portion 12 (saying in more detail it is this opening 121) and this vibrating diaphragm 40, and the material of this described elasticity membranous part 30 can be silica gel.And, this elasticity membranous part 30 for this second shell portion 12 relatively move with this vibrating diaphragm 40 (when producing vibration and sound).
Aforesaid this vibrating diaphragm 40 is positioned at the centre (circle lamellar body center) of this elasticity membranous part 30.The material of this vibrating diaphragm 40 can be Merlon (polycarbonate is called for short PC) or acrylonitrile-butadiene-styrene copolymer (Acrylonitrile-Butadiene-Styrene is called for short ABS resin), for generation of vibration and sound.
General being located on this vibrating diaphragm 40 of convergent pattern twist of this coil circuit 50, and be positioned at this spatial accommodation 13.The starting point of this coil circuit 50 and terminal are established respectively an electric connection point 51.
The present invention also comprises:
Two electrical signal lines 61 and a signal of telecommunication generating unit 62 (can be control circuit board).One end of this each electrical signal line 61 connects this signal of telecommunication generating unit 62 (comprising sound signal source and vibration signal source), and the other end of this each electrical signal line 61 connects respectively this two electric connection point 51, in order to connect this electric signal of input.
This signal of telecommunication generating unit 62 is positioned at this spatial accommodation 13, and inlay card to be fixed on this inside casing 12B upper, and be inserted on this interior side convex rib 11B4.
This magnet 20 is between this vibrating diaphragm 40 and this signal of telecommunication generating unit 62.
A plurality of touching signals lines 63, one end of this each touching signals line 63 links this touch-control display part 11A, and the other end of this each touching signals line 63 connects this signal of telecommunication generating unit 62.
Whereby, the touch-control signal producing about pressing this touch control layer 11A1, and the dependent picture information of this display layer 11A2 demonstration all can, via the plurality of touching signals line 63, mutually transmit between this touch-control display part 11A and this signal of telecommunication generating unit 62.
In sum, advantage of the present invention and function can be summarized as:
(1) can produce sound and vibration by single component.The present invention utilizes vibrating diaphragm surrounding link elasticity membranous part, vibrating diaphragm is provided with coil circuit and magnet is arranged in pairs or groups mutually, when inputting the alternating current of preset frequency, can produce sound or vibration.Therefore, can produce sound and vibration by single component.
(2) save space and reach ultra-thin finished product.The present invention has replaced traditional loud speaker and vibrating motor, therefore can save space, is also easy to be designed to one with the outer cage of hand-held electronic products simultaneously.So, can save space and reach ultra-thin finished product.Particularly, the loud speaker of traditional hand-held electronic products is arranged in receiver, so the present invention equals receiver, loud speaker and three kinds of function set of motor in one.
The above embodiment is only the preferred embodiment for absolutely proving that the present invention lifts, and protection scope of the present invention is not limited to this.Being equal to that those skilled in the art do on basis of the present invention substitutes or conversion, all within protection scope of the present invention.Protection scope of the present invention is as the criterion with claims.

Claims (10)

1. an electroacoustic transducer, is characterized in that, comprising:
One hollow housing, has one first shell portion and one second shell portion; This first shell portion and this second shell portion are connected and form a hollow structure, and it has a spatial accommodation, and this first shell portion has one first inner surface and the first outer surface; This second shell portion has an opening;
One magnet, is fixed on this first inner surface of this first shell portion;
One elasticity membranous part, in the form of sheets, and has an outer rim and an inner edge; This outer rim is fixed on this opening of this second shell portion;
One vibrating diaphragm, is fixed on this inner edge of this elasticity membranous part;
One coil circuit, in the shape of a spiral, and is located on this vibrating diaphragm, and has two electric connection points, in order to connect input one electric signal.
2. electroacoustic transducer according to claim 1, is characterized in that, wherein:
This electric signal be selected from exchange input, frequency between 20 ~ 20000Hz, frequency a kind of pattern wherein between 10 ~ 20Hz;
Whereby, when this electric signal is when exchanging input, the magnetic field that this coil circuit is subject to this magnet is inhaled and is scolded and produce reciprocal vibration;
When the frequency of this electric signal is during between 20 ~ 20000Hz, the vibration frequency of this vibrating diaphragm forms audio signal between people's ear earshot;
When the frequency of this electric signal is during between 10 ~ 20Hz, this vibration of membrane of shaking forms vibration signal.
3. electroacoustic transducer according to claim 1, is characterized in that, wherein, this hollow housing is square box body.
4. electroacoustic transducer according to claim 1, is characterized in that, wherein, this first shell portion comprises that a touch-control display part and is for the accommodating fixing framework of touch-control display part; This touch-control display part is square, and mainly comprises a touch control layer and a display layer; This touch control layer is for carrying out touch control operation; This display layer is inputted the information of this touch-control display part in order to demonstration, and receives the touch-control signal that presses this touch control layer and produce; This framework is square, and mainly comprises a plate-like body, a flange upwards protruding out from this plate-like body surrounding, an outer side convex rib protruding out from this plate-like body surrounding downwards, and an interior side convex rib protruding out downwards from this plate-like body inner side; This first inner surface and this first outer surface lay respectively at bottom surface and the end face of this plate-like body, and jointly define one for the accommodating fixing accommodation space of this touch-control display part by this first outer surface and this flange.
5. electroacoustic transducer according to claim 4, is characterized in that, wherein, this second shell portion mainly comprises a housing being square, an inside casing inwardly protruding out from this housing upside, and a flange protruding out from the inside level of this housing downside; The common slot of pegging graft for this outer side convex rib of this framework that forms of this housing and this inside casing, for this first shell portion and this second shell portion up and down group connect; This opening of this second shell portion is positioned on this flange.
6. electroacoustic transducer according to claim 5, is characterized in that, wherein, and the general rounded magnet groove of this outer side convex rib that this plate-like body surrounding protrudes out downwards;
This magnet is cylindric, and is fixed in this magnet groove.
7. electroacoustic transducer according to claim 5, is characterized in that, wherein:
This second shell portion is plate-like;
This first shell portion is tabular, can be combined and form this spatial accommodation of closed with this second shell portion.
8. electroacoustic transducer according to claim 5, is characterized in that, wherein, the spiral helicine Origin And Destination of this coil circuit is established respectively this two electric connection points.
9. electroacoustic transducer according to claim 8, is characterized in that, it also comprises:
Two electrical signal lines and a signal of telecommunication generating unit, one end of this each electrical signal line connects this signal of telecommunication generating unit, the other end connects this corresponding electric connection point, in order to input this signal of telecommunication, and this signal of telecommunication generating unit to be positioned at this hollow housing inner.
10. electroacoustic transducer according to claim 9, is characterized in that, it also comprises a plurality of touching signals lines, and one end of this each touching signals line links this touch-control display part, and the other end of this each touching signals line connects this signal of telecommunication generating unit.
CN201310338489.9A 2012-08-07 2013-08-06 Electroacoustic transducer Active CN103581806B (en)

Applications Claiming Priority (2)

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US201261680451P 2012-08-07 2012-08-07
US61/680,451 2012-08-07

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CN103581806B CN103581806B (en) 2016-11-02

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CN108574923A (en) * 2018-04-28 2018-09-25 深圳市摩码克来沃化学科技有限公司 A kind of preparation method of silicon-carbon vibrating diaphragm, carbonaceous vibrating diaphragm and the acoustic elements equipped with the vibrating diaphragm
CN108574923B (en) * 2018-04-28 2020-08-07 深圳市摩码克来沃化学科技有限公司 Preparation method of silicon-carbon vibrating diaphragm, carbon vibrating diaphragm and acoustic unit provided with vibrating diaphragm

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US9078059B2 (en) 2015-07-07
US20160007122A1 (en) 2016-01-07
TW201408087A (en) 2014-02-16
CN103581806B (en) 2016-11-02
US20140044301A1 (en) 2014-02-13

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